GY6 125cc - 150cc, Performance, (152QMI 152QMJ 157QMI 157QMJ)

   

GY6 125cc 150cc (152QMI 157QMJ)    Performance Parts  

   

 The 152QMI (GY6-125) & 157QMJ (GY6-150) (QMI152 QMJ157) is a horizontal, single-cylinder, four stroke, forced air cooled engine. This has a displacement of 149.6cc (157QMJ) has a bore size of 57.4mm and a stroke of 57.8mm. This type-A Honda clone engine has a automatic CTV transmission. This engine is used on many scooters, dirt bikes, quads, ATVs, go karts, and buggies.

Here are just a few of the many brands and models this very common engine is found on:
Avanti Beta 150, Avanti Epsilon 150cc, Baja, Bemine 150 Touring, Diamo 150, Diamo, Velux 150, Genuine Blur 150, Genuine G-Max, Howhit 150, JMstar, Jonway,
Jonway YY150T-2, Kinroad XT150T-8, Kymco, Lifan 125/150, Lifan L150T-7, Loncin 150, Longbo 150, Longbo LB150T-12, Mod Cycle 150, NST, Peace Sports 150, Primo "Strada" Streaker 150, Primo Terminator 150cc, Racer 150, RAD-10 150cc, Retro 150, Roketa, Roketa Fiji MC-04, Roketa Tahiti MC-03, Schwinn, Spigaly 150, Strada 150CE, Strada Chrome Edition RX150, Strada RX150TE, Strada RX200HP, Sunl, SYM, Tank, Tank 150cc (various models), Tank Racer 150, TNG, Tomos, Velux 150, Vento Phantom GT5 150cc, Vento Phantom R4I 150cc, Verucci Permier 150GTX SE, Verucci Viper 150GTX, VIP, Wangye 150, Wussi 150, Znen and many others...

(Click on the parts for additional pictures)

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835-20-30 Belt Bando GY6 150 157QMJ Long Case 10 bolt cover Scooter Moped ATV 201-1001-1015
$28.99 $28.99 Add to Cart

This is a very durable, High Quality Bando Belt printed 835-20-30, also a direct replacement for the 842-20-30 (Bando does not make a 842-20-30).  This is for the GY6 125/150cc 152QMI 152QMJ 157QMI 157QMJ "long case" scooter, quad, ATV and buggy engine. This belt has Aramid cord (Kevlar like material) for strong, heat resistant, long lasting wear and reliability. They don't get any tougher!  Note: Scooters with a long case usually have a 12" - 16" rear wheel. Save time and money, go for quality every time.

Air Filter 42mm 1 5/8" 30 degree High Flow Pod Dual Layer 201-1015-1002
$12.89 $12.89 Add to Cart

This is a very High Quality Dual Layer 42mm, 30 degree, small profile Performance Air Filter for high air flow that clamps on to your carburetor to ensure a tight clearance fit. This has a quality Urethane Flange and clamp. Unlike some 50’s this does not have a suspension cross member which would interfere with the filter installation. This filter fits the Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Tomos Nitro 50,  Vento, VIP and many others. This will fit just about any scooter, quad, moped, buggy, ATV, dirt bike, etc

Air Filter 42mm 1 5/8" 30 Degree Performance Blue Chrome Cone 201-1015-4024
$16.99 $16.99 Add to Cart
4 out of 5 Stars!

This is a very High Quality High Flow (42mm), 30 Degree, Blue/Chrome Cone,  (approx 90mm long), small profile Performance Air Filter for high air flow that clamps on to your carburetor to ensure a tight clearance fit. This has a quality Urethane Flange and clamp. This filter fits the Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Tomos Nitro 50,  Vento, VIP and many others. This will fit just about any scooter, quad, moped, buggy, ATV, dirt bike, etc

Air Filter 42mm 1 5/8" 90 Degree Performance Blue Chrome Cone 201-1015-4021
$16.99 $16.99 Add to Cart

This is a very High Quality High Flow (42mm), 90 Degree, Blue/Chrome Cone,  (approx 90mm long), small profile Performance Air Filter for high air flow that clamps on to your carburetor to ensure a tight clearance fit. This has a quality Urethane Flange and clamp. This filter fits the Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Tomos Nitro 50,  Vento, VIP and many others. This will fit just about any scooter, quad, moped, buggy, ATV, dirt bike, etc

Air Filter 42mm 1 5/8" Straight High Flow Pod Dual Layer 201-1015-1004
$16.99 $16.99 Add to Cart

This is a very High Quality Dual Layer 42mm, Red, Straight, small profile Performance Air Filter for high air flow that clamps on to your carburetor to ensure a tight clearance fit. This has a quality Urethane Flange and clamp. Unlike some 50’s this does not have a suspension cross member which would interfere with the filter installation. This filter fits the Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Tomos Nitro 50,  Vento, VIP and many others. This will fit just about any scooter, quad, moped, buggy, ATV, dirt bike, etc

Air Filter 42mm 1 5/8" Straight High Flow POD Dual Layer 201-1015-1003
$16.99 $16.99 Add to Cart

This is a very High Quality Dual Layer 42mm, Black, Straight, small profile Performance Air Filter for high air flow that clamps on to your carburetor to ensure a tight clearance fit. This has a quality Urethane Flange and clamp. Unlike some 50’s this does not have a suspension cross member which would interfere with the filter installation. This filter fits the Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Tomos Nitro 50,  Vento, VIP and many others. This will fit just about any scooter, quad, moped, buggy, ATV, dirt bike, etc

Air Filter 42mm 1 5/8" Straight Performance Blue Chrome Cone 201-1015-4018
$16.99 $16.99 Add to Cart

This is a very High Quality High Flow (42mm), Straight, Blue/Chrome Cone, Performance Air Filter for high air flow that clamps on to your carburetor to ensure a tight clearance fit. This has a quality Urethane Flange and clamp. This filter fits the Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Tomos Nitro 50,  Vento, VIP and many others. This will fit just about any scooter, quad, moped, buggy, ATV, dirt bike, etc

Air Filter 42mm 1 5/8" Straight Performance Shielded Chrome Cone 400-1015-4012
$12.99 $12.99 Add to Cart

This is a very high quality Air Filter, 42mm, 4-Stroke HP Air Filter, Straight, Shielded Chrome Cone (approx 90mm long) for the 152QMI 152QMJ 157QMI 157QMJ GY6 125cc 150cc and many other engines.

Air Filter GY6 150 157QMJ Scooter Moped ATV 200-1015-4008
$10.69 $10.69 Add to Cart

This is a very High Quality OEM Air Filter for high air flow in the GY6-125cc 150cc 152QMI 152QMJ 157QMI 157QMJ engine. This filter fits the Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Tomos Nitro 50,  Vento, VIP and many others. This will fit just about any scooter, quad, moped, buggy, ATV, dirt bike, etc

Belt Cover Chrome Racing Performance GY6 150 Long Case 10 bolt 157QMJ 201-1001-2010
$66.99 $66.99 Add to Cart

Belt Cover, Chrome, High Performance for the GY6-125/150 Long Case, left side transmission cover

Camshaft A14  Racing Performance GY6 150 ATV 201-1004-1004
$24.79 $24.79 Add to Cart

This is an high quality A14 Performance Sport Camshaft assembly for the 152QMI 125cc, 157QMJ 150cc, 161QMK scooter, quad, ATV, buggy and go-kart engine. This sport camshaft is excellent for ATVs, buggies and quads and will improve your engines performance in the low-end to mid-range torque for better climbing and power.

Camshaft A9 Racing GY6 150 157QMJ Scooter Moped ATV 201-1004-1002
$24.89 $24.89 Add to Cart

This is an A9 Performance Sport Camshaft assembly for the 152QMI 125cc and 157QMJ 150cc scooter, quad, buggy, and go-kart engine. This sport camshaft will improve your engine torque and performance in the upper mid-range and top-end of your engine.

Carburetor Main Jet  #115 Mikuni GY6 150 157QMJ B-200-1005-3005
$3.99 $3.99 Add to Cart

This is a carburetor main jet (M5 x .8, length 8mm) for the GY6 125cc and 150cc 152qmi and 157qmj engines. These are pretty easy to replace and a must if you want to upgrade your engine's performance with performance parts or upgrades.

Mechanics Note: If you increase the size of your stock carb jet you will want to improve your air flow both in and out of the engine.  For smaller upgrades replace the stock air filter with a Performance Air Filter for this engine.  If you upgrade beyond small adjustments you will want to install a Performance Exhaust to handle the increased combustion and minimize back flow issues.

Altitude can play an issue in scooter performance. When you are dealing with elevation you will want to rejet to prevent your engine from siezing and requiring a rebuild.  You will loose about 3% in power for every 1000' in elevation. At 4000' feet you will have lost about 12% of your power output.  You will want to go down one (1) jet size for every 1750' to 2000' you go up in elevation.  When the air is colder it requires bigger jets because cold air is more dense. If it is 50 degrees colder you would increase your jet size at least one step up.  If you don't your engine can sieze on you.

Carburetor Main Jet #125 Mikuni GY6 150 157QMJ B-200-1005-3006
$3.99 $3.99 Add to Cart

This is a carburetor main jet  (M5 x .8, length 8mm) for the GY6 125cc and 150cc 152qmi and 157qmj engines. These are pretty easy to replace and a must if you want to upgrade your engine's performance with performance parts or upgrades. This jet requires at least a Performance Air Filter.

Mechanics Note: If you increase the size of your stock carb jet you will want to improve your air flow both in and out of the engine. For smaller upgrades replace the stock air filter with a Performance Air Filter for this engine. If you upgrade beyond small adjustments you will want to install a Performance Exhaust to handle the increased combustion and minimize back flow issues.

Altitude can play an issue in scooter performance. When you are dealing with elevation you will want to rejet to prevent your engine from siezing and requiring a rebuild. You will loose about 3% in power for every 1000' in elevation. At 4000' feet you will have lost about 12% of your power output. You will want to go down one (1) jet size for every 1750' to 2000' you go up in elevation. When the air is colder it requires bigger jets because cold air is more dense. If it is 50 degrees colder you would increase your jet size at least one step up. If you don't your engine can sieze on you.

Carburetor Main Jet #135 Mikuni GY6 150 157QMJ B-200-1005-3007
$3.99 $3.99 Add to Cart

This is a carburetor main jet (M5 x .8, length 8mm) for the GY6 125cc and 150cc 152qmi and 157qmj engines. These are pretty easy to replace and a must if you want to upgrade your engine's performance with performance parts or upgrades. This jet requires and Performance Air Filter and a Performance Exhaust.

Mechanics Note: If you increase the size of your stock carb jet you will want to improve your air flow both in and out of the engine. For smaller upgrades replace the stock air filter with a Performance Air Filter for this engine. If you upgrade beyond small adjustments you will want to install a Performance Exhaust to handle the increased combustion and minimize back flow issues.

Altitude can play an issue in scooter performance. When you are dealing with elevation you will want to rejet to prevent your engine from siezing and requiring a rebuild. You will loose about 3% in power for every 1000' in elevation. At 4000' feet you will have lost about 12% of your power output. You will want to go down one (1) jet size for every 1750' to 2000' you go up in elevation. When the air is colder it requires bigger jets because cold air is more dense. If it is 50 degrees colder you would increase your jet size at least one step up. If you don't your engine can sieze on you.

CDI AC 6 Pin Racing High Performance Non Rev GY6 50 150 139QMB 157QMJ 101-1006-0021
$12.99 $12.99 Add to Cart

This is an AC High Performance Racing CDI for the GY6 50cc, 125cc, and 150cc 139QMB, 152QMI and 157QMJ based engines. This CDI is similar to our orange performance CDI but has a more aggressive ignition advance curve. This is a performance CDI for the Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Vento, VIP and many others.. We have the best quality ignition parts for Chinese engines!

Mechanics Note: According to the experts, there is only one true way to know whether you have an AC or DC system. First, be sure your battery is fully charged and your fuse is good. Second, turn the key on, but DO NOT start your engine.  Using this CDI pin configuration:

[ 1 2 ][ 5 ]
[ 3 4 ][ 6 ]

with a voltage tester and leaving everything hooked up normal, go in through the top, through the wires until you have contact, check the #6 pin to see if it has 12v present?  Your system is DC  if you have 12V.  If not voltage then it is an AC system. Your AC system can have over 50v AC while cranking.

CDI AC 6 pin Racing Non Rev GY6 Scooter Moped ATV 201-1006-0017
$9.89 $9.89 Add to Cart
5 out of 5 Stars!
  • This is a 6-pin AC Racing Performance CDI with an Unrestricted Rev Limit and an advanced timing curve for the GY6 50cc 125cc and 150cc engines. Engine applications include the 139QMB, 152QMI, 152QMJ, 157QMI, and 157QMJ.  These CDI's have no governor and eliminate that irritating rev-limiter which might be keeping your engine speed restricted
  • This CDI is found on the Baja, JMstar, Jonway, Lance, NST,Peace,Roketa, Sunl, Tank, TNG, Vento, VIP and many others. Compatibility, however, is based on matching wiring and connectors. Please ensure your make and model have the same connector and number of pins prior to ordering. This CDI has the rounded dual slot, 6-pin receiver and measures 2.5" x 1.5" x 1.5".
  • This high quality CDI is made tough and is durable on and off the track and will give your engine better acceleration and top end if your engine is in good running condition, including good compression. It is an inexpensive way to gain performance. Check our eBay store we have many different OEM and Racing Performance CDI's to choose from. We recommend taking a look at our high performance coils as well.

Mechanics Note: According to the experts, there is only one true way to know whether you have an AC or DC system. First, be sure your battery is fully charged and your fuse is good. Second, turn the key on, but DO NOT start your engine.  Using this CDI pin configuration:

[ 1 2 ][ 5 ]
[ 3 4 ][ 6 ]

with a voltage tester and leaving everything hooked up normal, go in through the top, through the wires until you have contact, check the #6 pin to see if it has 12v present?  Your system is DC  if you have 12V.  If not voltage then it is an AC system. Your AC system can have over 50v AC while cranking.

CDI DC 6 Pin Racing Non Rev GY6  50 -150 139QMB 157QMJ Scooter Moped ATV 201-1006-0012
$12.99 $12.99 Add to Cart
5 out of 5 Stars!
  • This is a 6-pin DC Racing Performance CDI with an Unrestricted Rev Limit and an advanced timing curve for the GY6 50cc 125cc and 150cc engines. Engine applications include the 139QMB, 139QMA  152QMI, 152QMJ, 157QMI, and 157QMJ.  These CDI's have no governor and eliminate that irritating rev-limiter which might be keeping your engine speed restricted. 
  • For this CDI your engine must have a 3-phase type generator and regulator/rectifier. This CDI has the rounded-style plug receiver. CDI Size: 3" x 1 5/8" x 15/16". 
  • This CDI is found on the Baja SC50 Sun City, Carter Brothers Interceptor GTR 250 with the SYM 250,  Diamo Velocity, Eton sport 50, JCL MP-150, Lance GSR 150, Schwinn, SYM sport 50, SYM VS125, Tomos Nitro 50, Vento Triton, VMOTO Monaco 125cc and other Korean, Chinese and Taiwanese scooters.and many others. Compatibility, however, is based on matching wiring and connectors. Please ensure your make and model have the same connector and number of pins prior to ordering.
  • Mechanics Note: According to the experts, there is only one true way to know whether you have an AC or DC system. First, be sure your battery is fully charged and your fuse is good. Second, turn the key on, but DO NOT start your engine.  Using this CDI pin configuration:

    [ 1 2 ][ 5 ]
    [ 3 4 ][ 6 ]

    with a voltage tester and leaving everything hooked up normal, go in through the top, through the wires until you have contact, check the #6 pin to see if it has 12v present?  Your system is DC  if you have 12V.  If not voltage then it is an AC system. Your AC system can have over 50v AC while cranking.


     

           

CDI DC High Performance Unlimited KYMCO Agility 50 125 KYMCO People 150 101-1006-0032
$28.99 $28.99 Add to Cart

This is a High Performance Non-Rev unlimited CDI for the KYMCO Agility 50cc and 125cc (2006-2011, 2012-2015 with this 6 pin 4 & 2 plug).  This CDI replaces KYMCO Part Number 30410-LBD6-E00.  This CDI is will also work on the KYMCO People 150 (2002-2011) , and KYMCO People 50 4 stroke (2006-2009) and KYMCO Sento 50 4 stroke (2009-2011).

Clutch Bell Chrome Racing GY6 150 157QMJ Scooter Moped ATV 201-1007-3004
$44.99 $44.99 Add to Cart

Clutch Bell, Chrome, Performance ventilated clutch bell, GY6-125/150 152QMI 157QMJ

Clutch Bell Housing Racing GY6 150 157QMJ Scooter Moped ATV 201-1007-3003
$44.99 $44.99 Add to Cart

This is a high quality heavy duty Performance Clutch Bell for the 4 stroke GY6 125cc 150cc 152QMI 152QMJ 157QMI 157QMJ scooter, moped, ATV & Go-Kart engines.

This Performance Clutch Bell housing fits a performance clutch.  It will often be too large for a OEM clutch.  We have the matching Performance Clutch part number 201-1007-0001 available for your convenience on our web site.

This better than original clutch bell, is built stronger to prevent warping, with better ventilation for proper cooling, and has better grab and power.

Measurements:

  • I/D: 125mm
  • O/D: 139mm
Clutch Nut (M12) GY6 150 157QMJ F-1040-0012-FNSL1.25
$3.99 $3.99 Add to Cart

This is a Rear Clutch Nut for the GY6-125cc 150cc 152QMI 152QMJ 157QMI 157QMJ scooter. (M12 x 1.25)

Clutch Racing GY6 150 157QMJ Scooter Moped ATV 201-1007-0001
$49.99 $49.99 Add to Cart

This is a High Performance Clutch for the GY6 125cc 150cc 152QMI 152QMJ 157QMI 157QMJ scooter, moped, ATV & go-kart engines. (Measures Approx. 4 3/4", 120mm on the backplate)

This performance clutch often requires a Performance Clutch Bell and may not fit your OEM bell. If it does not fit your OEM bell, we have the matching performance clutch bell housing part number  201-1007-3003

This clutch has high friction clutch pads with rigid backing plates!

Clutch Springs 1.5K 1500 RPM Racing GY6 150 157QMJ Scooter Moped ATV 201-1029-2002
$5.99 $5.99 Add to Cart

These are 1500 RPM Performance Clutch Springs that fit all clutches on the Chinese GY6-125/150 4-stroke engines scooters, quads, mopeds, ATVs, go- karts, and buggies. These springs are available in 1K, 1.5K, and 2K spring rates. The GY6-125/150 Clutch Springs have an overall length of 35.9mm.  The coiled portion of the spring measures 14.9mm in length.  Spring colors may vary.

Clutch Springs 1K 1000 RPM Racing GY6 150 157QMJ Scooter Moped ATV 201-1029-2001
$7.89 $7.89 Add to Cart

These are 1000 RPM Performance Clutch Springs that fit all clutches on the Chinese GY6-125/150 4-stroke engines scooters, quads, mopeds, ATVs, go- karts, and buggies. These springs are available in 1K, 1.5K, and 2K spring rates. The GY6-125/150 Clutch Springs have an overall length of 35.9mm.  The coiled portion of the spring measures 14.9mm in length. Spring colors may vary.

Clutch Springs 2K 2000 RPM Racing GY6 150 157QMJ Scooter Moped ATV 201-1029-2003
$5.99 $5.99 Add to Cart

These are the 2000 RPM Performance Clutch Springs that fit all clutches on the Chinese GY6-125/150 4-stroke engines scooters, quads, mopeds, ATVs, go- karts, and buggies. These springs are available in 1K, 1.5K, and 2K spring rates. The GY6-125/150 Clutch Springs have an overall length of 35.9mm.  The coiled portion of the spring measures 14.9mm in length. Spring color may be red or chrome.

Clutch Torque Spring 1.5K 1500 RPM Racing GY6 150 157QMJ Scooter Moped ATV 201-1030-5002
$14.99 $14.99 Add to Cart
5 out of 5 Stars!

These are performance torque springs for the Chinese made GY6, 4T, 125/150cc engine 152QMI, 152QMJ, 157QMI, 157QMJ installed on scooters, quads, mopeds, ATVs, buggies and go-karts. These come in 1K, 1.5K, and 2K spring rates.  These are Performance Torque Springs to maximize your engine's torque and response. These top performing springs will give you back your acceleration, hill climbing ability and make your machine run as a top performer once again. Torque springs should be changed about every 800 miles because of heat and fatigue.

Mechanic Note: Torque Springs come in (3) different rates or RPM ratings, 1000 (1K) often Blue, 1500 (1.5K) often Yellow, and 2000 (2K) often RED. The lowest rated 1K may give you a higher speed overall but will engage at a lower RPM on take-off. If you or your scoot are heavy, you may be disappointed in the initial torque, take off and acceleration. The 1K will also have the hardest time "pulling the hills". On the other end the 2K will give you the greatest grabbing power and a higher RPM at take-off, and will pull the hills the best, but may be slower in speed overall. The 1.5K is in the middle. If you go with a heavier torque spring, you may want to go to a slightly higher variator roller or slider weight. At the same time, if you go to a lower RPM spring, you may need to go to a lighter weight. It is a fine line to find balance between torque spring and variator roller weight, achieved only through trial and error

Clutch Torque Spring 1K 1000 RPM Racing GY6 150 157QMJ Scooter Moped ATV 201-1030-5001
$14.99 $14.99 Add to Cart

These are performance torque springs for the Chinese made GY6, 4T, 125/150cc engine 152QMI, 152QMJ, 157QMI, 157QMJ installed on scooters, quads, mopeds, ATVs, buggies and go-karts. These come in 1K, 1.5K, and 2K spring rates.  These are Performance Torque Springs to maximize your engine's torque and response. These top performing springs will give you back your acceleration, hill climbing ability and make your machine run as a top performer once again. Torque springs should be changed about every 800 miles because of heat and fatigue.

Mechanic Note: Torque Springs come in (3) different rates or RPM ratings, 1000 (1K) often Blue, 1500 (1.5K) often Yellow, and 2000 (2K) often RED. The lowest rated 1K may give you a higher speed overall but will engage at a lower RPM on take-off. If you or your scoot are heavy, you may be disappointed in the initial torque, take off and acceleration. The 1K will also have the hardest time "pulling the hills". On the other end the 2K will give you the greatest grabbing power and a higher RPM at take-off, and will pull the hills the best, but may be slower in speed overall. The 1.5K is in the middle. If you go with a heavier torque spring, you may want to go to a slightly higher variator roller or slider weight. At the same time, if you go to a lower RPM spring, you may need to go to a lighter weight. It is a fine line to find balance between torque spring and variator roller weight, achieved only through trial and error 

Clutch Torque Spring 2K 2000 RPM Racing GY6 150 157QMJ Scooter Moped ATV 201-1030-5003
$14.99 $14.99 Add to Cart

These is the Racing Performance Torque Spring for the Chinese made GY6, 4T, 125/150cc engine 152QMI, 152QMJ, 157QMI, 157QMJ installed on scooters, quads, mopeds, ATVs, buggies and go-karts. 

 

   This Racing Performance Torque Spring maximizes your engine's torque and response. These top performing springs will give you back your acceleration, hill climbing ability and make your machine run as a top performer once again. Torque springs should be changed about every 800 miles because of heat and fatigue.


    Measurements:
I/D: 49.3mm
O/D: 58.4mm
Length: 151mm


    Mechanic Note: Torque Springs come in (3) different rates or RPM ratings, 1000 (1K) often Blue, 1500 (1.5K) often Yellow, and 2000 (2K) often RED all of which we sell in our eBay Store.

 

The lowest rated 1K may give you a higher speed overall but will engage at a lower RPM on take-off. If you or your scoot are heavy, you may be disappointed in the initial torque, take off and acceleration. The 1K will also have the hardest time "pulling the hills".  

 

    On the other end the 2K will give you the greatest grabbing power and a higher RPM at take-off, and will pull the hills the best, but may be slower in speed overall.

 

   The 1.5K is in the middle. If you go with a heavier torque spring, you may want to go to a slightly higher variator roller or slider weight. At the same time, if you go to a lower RPM spring, you may need to go to a lighter weight. It is a fine line to find balance between torque spring and variator roller weight, achieved only through trial and error Torque springs should be changed about every 800 miles because of heat and fatigue. 

Coil High Performance GY6 CFmoto 250 Scooter Moped ATV 201-1008-0002
$12.39 $12.39 Add to Cart

This is a high performance ignition coil for all GY6, 4-stroke engines including the 50cc, 125cc, 150cc, and 250cc Chinese engine. This coil will greatly increase your spark and improve your performance, acceleration, starting, and fuel mileage. These are easy to install on any engine. This coil fits the 139QMB, 152QMI, 152QMJ, 157QMI, 157QMJ, CF250 and 172MM. This fits the GY6 on Baja, JMStar, Jonway, Lance, NST, Roketa, Sunl, Tank, Tomos, TNG, Vento, VIP and many others.
 
Mechanic Note : There is no guarantee of performance because engines may have other performance issues. Check out our rebuild kits to go to the next step!

Exhaust Gasket Ring GY6 150 157QMJ B-200-1013-2001
$3.99 $3.99 Add to Cart

This is a Exhaust Gasket Ring for the 4 stroke GY6 125cc 150cc 152QMI 152QMJ 157QMI 157QMJ engine. Make your engine sound good again. This gasket fits Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Vento, VIP and many others.

Exhaust Stud (6M x 1.0) Muffler Cap Nut GY6 Honda Style Horizontal Dirt Pit Bike Quad ATV F-1040-0006-CAPN1.0
$3.99 $3.99 Add to Cart

Exhaust Stud (6M x 1.0) and Muffler Cap Nut for the 6mm GY6 50cc, 125cc, 150cc, Horizontal 50 -125

Exhaust Stud Bolt Set 6mm (Set of 2) GY6 50 150 139QMB 157QMJ B-100-1013-3000
$4.99 $4.99 Add to Cart

This is a replacement exhaust stud bolt set (M6 x 1.0 x 32mm)is for the 4-stroke, GY6 50cc and some 125cc and 150cc engines. These directly replace the stock bolts.

Exhaust Stud Bolt Set 8mm (Pair) GY6 150 157QMJ B-200-1013-3001
$3.99 $3.99 Add to Cart

Exhaust Stud Bolts, (1 Pair) M8x1.25 for the 172MM 250cc 4-stroke water-cooled CF250 CN250 engines and GY6 125cc/ 150cc  and the ZNEN GY6 150cc 4-stroke engines found on the Bintelli, Gorilla Motor Works (GMW) and Puma scooters and many others makes & models.

Exhaust Stud Nuts (Pair) GY6 6M Locking Alloy F-1040-0006-CN1.00
$3.99 $3.99 Add to Cart

This is one pair (2) nut fasteners for the GY6 Exhaust Stud Bolts.  This is made from a special aircraft alloy metal that withstands high temperatures.  This is a locking nut to handle the vibrations.  Also, this nut will not rust or corrode, making it much easier to change or remove at some later date.

Flywheel Rotor Nut (M12) GY6 150 157QMJ F-1040-0012-FNSL1.25
$3.99 $3.99 Add to Cart

This is a replacement Flywheel Rotor Nut to replace your stripped out, worn out or lost original. (M12 x 1.25)

Flywheel Rotor Puller Tool GY6 Scooter Moped 100-1032-5000
$12.99 $12.99 Add to Cart

This is a quality a reversible flywheel puller tool for the 4 stroke GY6 50cc, 125cc, and 150cc scooter, quad, buggy, and ATV engine. This tool is a "must have" for the tool box and is ideal for making the job much easier.

Fuel Valve 3 way In line GY6 Scooter Moped ATV 1-1016-1001
$11.99 $11.99 Add to Cart

This is an easy to install, single bolt mount, 3-way, 3-port in-line vacuum operated fuel valve petcock (aka fuel pump) for many engines including the GY6 engine. This valve can be found on the Adly, Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Vento, VIP, and many others... We ship the same day as ordered, for quick service!

Mechanics Note: If the diaphragm inside this valve fails, it will supersede your carburetor float valve and cause your engine to flood to where it will cause it to lock-up while sitting. This valve has a single bolt mount for easy installation. . Get quality products you can trust from us!

Gasket Head & Base Set 52mm GY6 125 152QMI 152QMJ Scooter Moped ATV 200-1017-1024
$5.99 $5.99 Add to Cart

This is a Complete Head and Base Gasket Set for the 4 Stroke, 52mm GY6-125, 152QMI 152QMJ engine. This complete gasket set fits the Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Vento, VIP and many others.

Gasket Head & Base Set 57.4mm GY6 150 157QMI 157QMJ Scooter Moped ATV 200-1017-1025
$5.99 $5.99 Add to Cart

This is a Complete Head and Base Gasket Set for the 4 Stroke, 57.4mm, GY6-150, 157QMI 157QMJ engine. This complete gasket set fits the Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Vento, VIP and many others.

Gasket Head & Base Set 59mm GY6 155 Big Bore 157QMJ Scooter Moped ATV 201-1017-0015
$7.89 $7.89 Add to Cart

This is the Head and Base Gasket Set for the 59mm GY6-155 Big Bore Kit.

Gasket Intake Manifold Insulator GY6 150 157QMJ B-400-1005-2010
$3.99 $3.99 Add to Cart

This is the Intake Manifold Insulator Gasket for the 4 stroke GY6 125 150cc 152QMI 152QMJ 157QMI 157QMJ engine.

Mechanics Note: This gasket sits between the head and the manifold. Like the manifold, these will get old over time and leak air causing the engine to run poorly. We suggest you replace these and the Insulator whenever you change the manifold to avoid problems later. Keep these in stock!

Piston & Ring Set GY6 155cc 59mm 15mm wrist pin Big Bore GY6 150 157QMJ 201-1026-2010
$32.99 $32.99 Add to Cart

This is a complete High Compression, High Quality Denso Tiawanese Piston and Ring Set for the Big Bore 59mm bore on the GY6-155, 157QMI 157QMJ engine. This set comes with the 59mm piston, a full set of rings, 15mm wrist pin, and circlips.

Spark Plug C7HIX Iridium Performance GY6 Sachs Honda 101-1028-0007
$21.99 $21.99 Add to Cart

This is a German Quality Xtra Power Performance HMK C7HIX Spark Plug for the  horizontal Honda Trail style engines, Honda, Kawasaki KLX and KSR  2 valve Heads on the 49/86/90/110/120/125/140/150/160/170, and Sachs Madass . This plug also fits the GY6 4-stroke 50, 125 & 150cc engines in many models including the Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Vento, VIP, and many others. Service Manual recommend a gap:  .5 -.6mm (0.22 -.24 inches).

Spark Plug C7HSA NGK GY6 Sachs Honda Scooter Moped ATV 1-1028-0001
$3.99 $3.99 Add to Cart

This is a high quality NGK C7HSA (mid heat) spark plug for the  horizontal Honda Trail style engines, Honda, Kawasaki KLX and KSR  2 valve Heads on the 49/86/90/110/120/125/140/150/160/170, and Sachs Madass 125 . This plug also fits the GY6 4-stroke 50, 125 & 150cc engines in many models including the Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Vento, VIP, and many others. Many manuals recommend a gap of .5 -.6mm (0.22 -.24 inches).

  • Thread Size: 10mm
  • Hex Size: 16mm (5/8 inch)
  • Gap: 0.7mm (.028 inch)
  • Reach: 12.7mm (1/2 inch)
  • Heat Range: 7
  • Does not include terminal nut
Starter Clutch Removal Tool GY6 150 157QMJ Scooter Moped ATV 200-1032-5001
$24.89 $24.89 Add to Cart

This is a very handy Starter Clutch Removal Tool for a quicker and easier removal without damaging the clutch or engine.  This tool fits the GY6 125cc and 150cc 152QMI and 157QMJj engines. This is a "must have" for the tool box.

Stator Tool GY6 CF250 CN250 Scooter Moped ATV 1-1032-5002
$24.99 $24.99 Add to Cart

This handy fully adjustable Stator Tool will make the job of stator removal much easier.  This fully adjustable tool will help prevent damage to the stator and your engine.  Works on most 4-stroke scooter, ATV, buggy, and quad engines 

Variator Drive Face Fan Racing GY6 150 157QMJ Scooter Moped ATV 201-1037V-1503
$12.99 $12.99 Add to Cart

Variator Drive Face, Fan, Type B, GY6-125/150, light weight (less than Type A) easier acceleration, less top speed than Type A. This Variator Drive face fits GY6 based Baccio, Baja, Jonway, JMstar, Lifan, Malaguti Wussi, PGO Bugrider, PGO Bugxter, KYMCO, PGO, Roketa, Strada RX150, Sunl, SYM, Tank, TGB, TNG, Vento, Vento Phantom R4i 125cc, Verucci, VIP, Viva, Yamati and many others. 

Measurements:

  • Splines: 19
  • Outer Diameter: 116mm
Variator High Performance (10g) Racing Sliders GY6 150 157QMJ Scooter Moped ATV 201-1037V-1013
$79.99 $79.99 Add to Cart

Variator, Racing Super High Performance,  GY6-125/150, Gigantic 115mm drive face, with super steep racing roller ramps, extended glide rails, neoprene slide guides, bushings and Light Fan B plate

•Includes Sliders Guides
•Performance Roller Sliders: 10g
•Number of Splines: 19
•Drive Face Outer Diameter: 115mm
•Boss Inner Diameter: 15mm
•Boss Outer Diameter: 24mm
•Ramp Plate Inner Diameter: 15mm 
•Fan Inner Diameter Peak to Peak: 14mm
•Fan Inner Diameter Valley to Valley: 15mm
 

Variator High Performance (12g) Racing Rollers GY6 150 157QMJ Scooter Moped ATV 201-1037V-1007
$26.89 $26.89 Add to Cart

This is a  High Performance Variator with 12g Performance Rollers for the GY6-125/150 engine 157QMJ 157QMI 152QMJ 152QMI.  This Variator has a larger than stock 115mm drive face with steeper roller ramps, an extended glide rails for more travel, Performance Glide Bushings and moly coated ramp plate for smooth roller/slider travel. (Note: Please request a different roller weight if desired)

Specs:

  • •Includes Sliders Guides
  • •Performance Rollers: 12g
  • •Number of Splines: 19
  • •Drive Face Outer Diameter: 115mm
  • •Boss Inner Diameter: 15mm
  • •Boss Outer Diameter: 24mm
  • •Ramp Plate Inner Diameter: 15mm 
  • •Fan Inner Diameter Peak to Peak: 14mm
  • •Fan Inner Diameter Valley to Valley: 15mm
Variator Nut Front Clutch (M12) GY6 150 157QMJ F-1040-0012-FNSL1.25
$3.99 $3.99 Add to Cart

This is the replacement Front Variator Clutch Nut to replace your stipped, worn-out or lost original.  (M12 x 1.25) 

Variator Roller Set 18X14 (10g) Racing GY6 150 157QMJ Scooter Moped ATV 201-1037-2010
$7.89 $7.89 Add to Cart

These are a high performance, fine quality copper-core rollers designed to give top performance without destroying your variator like the steel-core may do. These rollers are far superior to your original rollers.

Mechanics Note:

Heavier roller weights= A slower take off speed with more acceleration and a higher top speed.
Lighter roller weights = A faster take off speed with less acceleration and lower top speed.

Variator Roller Set 18X14 (11g) Racing GY6 150 157QMJ Scooter Moped ATV 201-1037-2011
$7.89 $7.89 Add to Cart

These are a high performance, fine quality copper-core rollers designed to give top performance without destroying your variator like the steel-core may do. These rollers are far superior to your original rollers.

Mechanics Note:

Heavier roller weights= A slower take off speed with more acceleration and a higher top speed.
Lighter roller weights = A faster take off speed with less acceleration and lower top speed.

Variator Roller Set 18X14 (12g) Racing GY6 150 157QMJ Scooter Moped ATV 201-1037-2012
$7.89 $7.89 Add to Cart

These are a high performance, fine quality copper-core rollers designed to give top performance without destroying your variator like the steel-core may do. These rollers are far superior to your original rollers.

Mechanics Note:

Heavier roller weights= A slower take off speed with more acceleration and a higher top speed.
Lighter roller weights = A faster take off speed with less acceleration and lower top speed.

Variator Roller Set 18X14 (13g) Racing GY6 150 157QMJ Scooter Moped ATV 201-1037-2013
$7.89 $7.89 Add to Cart

These are a high performance, fine quality copper-core rollers designed to give top performance without destroying your variator like the steel-core may do. These rollers are far superior to your original rollers. The OEM weight for this engine is 12.8g.  This fits the Baja, JMstar, Jonway, NST, Roketa, Sunl, Tank, TNG, Vento, VIP and many others.

Mechanics Note:

Heavier roller weights= A slower take off speed with more acceleration and a higher top speed.
Lighter roller weights = A faster take off speed with less acceleration and lower top speed.

Variator Roller Set 18X14 (14g) Racing GY6 150 157QMJ Scooter Moped ATV 201-1037-2014
$7.89 $7.89 Add to Cart

Variator ROLLERS, 18X14 (14g) Racing Performance, 4 Stroke, GY6-125/150, 157QMJ, 157QMI, 152QMI, 152QMJ

Variator Roller Set 18X14 (15g) Racing GY6 150 157QMJ Scooter Moped ATV 201-1037-2015
$7.89 $7.89 Add to Cart

Variator ROLLERS, 18X14 (15g) Racing Performance, 4 Stroke, GY6-125/150, 157QMJ, 157QMI, 152QMI, 152QMJ

Variator Roller Set 18X14 (16g) Racing GY6 150 157QMJ Scooter Moped ATV 201-1037-2016
$7.89 $7.89 Add to Cart

Variator ROLLERS, 18X14 (16g) Racing Performance, 4 Stroke, GY6-125/150, 157QMJ, 157QMI, 152QMI, 152QMJ

Variator Roller Set 18X14 (8g) Racing GY6 150 157QMJ Scooter Moped ATV 201-1037-2008
$12.99 $12.99 Add to Cart

These are a high performance, fine quality copper-core rollers designed to give top performance without destroying your variator like the steel-core may do. These rollers are far superior to your original rollers.

Mechanics Note:

Heavier roller weights= A slower take off speed with more acceleration and a higher top speed.
Lighter roller weights = A faster take off speed with less acceleration and lower top speed.

Variator Roller Set 18X14 (9g) Racing GY6 150 157QMJ Scooter Moped ATV 201-1037-2009
$12.89 $12.89 Add to Cart

These are a high performance, fine quality copper-core rollers designed to give top performance without destroying your variator like the steel-core may do. These rollers are far superior to your original rollers.

Mechanics Note:

Heavier roller weights= A slower take off speed with more acceleration and a higher top speed.
Lighter roller weights = A faster take off speed with less acceleration and lower top speed.

Variator Roller Slider Set 18 x 14 (10g) Racing GY6 150 157QMJ Scooter Moped ATV 201-1037-2510
$16.99 $16.99 Add to Cart

These are polygon performance variator sliders to upgrade your older style rollers. These sliders equalize the load pressure to reduce sticking and broaden the range of variations. They come in 10g, 12g, 13g and 15g weight options. These are well priced for longer lasting improved performance.

 Mechanics Note:

Heavier roller weights= A slower take off speed with more acceleration and a higher top speed.
Lighter roller weights = A faster take off speed with less acceleration and lower top speed.

     

Variator Roller Slider Set 18 x 14 (11g) Racing GY6 150 157QMJ Scooter Moped ATV 201-1037-2511
$16.99 $16.99 Add to Cart

Variator Performance Roller Slider Set, (11g), 18 x 14, 4 Stroke, GY6-125/150, 157QMJ, 157QMI, 152QMI, 152QMJ

Variator Roller Slider Set 18 x 14 (12g) Racing GY6 150 157QMJ Scooter Moped ATV 201-1037-2512
$16.99 $16.99 Add to Cart

These are polygon performance variator sliders to upgrade your older style rollers. These sliders equalize the load pressure to reduce sticking and broaden the range of variations. They come in 12g, 13g and 15g weight options. These are well priced for longer lasting improved performance.

Mechanics Note:

Heavier roller weights= A slower take off speed with more acceleration and a higher top speed.
Lighter roller weights = A faster take off speed with less acceleration and lower top speed.

Variator Roller Slider Set 18 x 14 (13g) Racing GY6 150 157QMJ Scooter Moped ATV 201-1037-2513
$16.99 $16.99 Add to Cart

These are polygon performance variator sliders to upgrade your older style rollers. These sliders equalize the load pressure to reduce sticking and broaden the range of variations. They come in 13g and 15g weight options. The OEM weight for this engine is 12.8g.  These are well priced for longer lasting improved performance.

Mechanics Note:

Heavier roller weights= A slower take off speed with more acceleration and a higher top speed.
Lighter roller weights = A faster take off speed with less acceleration and lower top speed.

Variator Roller Slider Set 18 x 14 (14g) Racing GY6 150 157QMJ Scooter Moped ATV 201-1037-2514
$16.99 $16.99 Add to Cart

Variator Performance Roller Polygon Slider Set, (14g), 18 x 14,  for the 4 Stroke, GY6-125/150, 157QMJ, 157QMI, 152QMI, 152QMJ engine

Variator Roller Slider Set 18 x 14 (15g) Racing GY6 150 157QMJ Scooter Moped ATV 201-1037-2515
$16.99 $16.99 Add to Cart

These are polygon performance variator sliders to upgrade your older style rollers. These sliders equalize the load pressure to reduce sticking and broaden the range of variations. They come in 12g, 13g and 15g weight options. These are well priced for longer lasting improved performance.

Mechanics Note:

Heavier roller weights= A slower take off speed with more acceleration and a higher top speed.
Lighter roller weights = A faster take off speed with less acceleration and lower top speed.

Variator Roller Slider Set 18 x 14 (16g) Racing GY6 150 157QMJ Scooter Moped ATV 201-1037-2516
$16.99 $16.99 Add to Cart

Variator Performance Roller Polygon Slider Set, 4 Stroke, GY6-125/150, 157QMJ, 157QMI, 152QMI, 152QMJ, 18 x 14, (16g)

Variator Roller Slider Set 18 x 14 (8g) Racing GY6 150 157QMJ Scooter Moped ATV 201-1037-2508
$16.99 $16.99 Add to Cart

Variator Performance Roller Polygon Slider Set, (8g), 18 x 14,  for the 4 Stroke, GY6-125/150, 157QMJ, 157QMI, 152QMI, 152QMJ engine

Variator Roller Slider Set 18 x 14 (9g) Racing GY6 150 157QMJ Scooter Moped ATV 201-1037-2509
$16.99 $16.99 Add to Cart

Variator Performance Roller Slider Set, (9g), 18 x 14, 4 Stroke, GY6-125/150, 157QMJ, 157QMI, 152QMI, 152QMJ

Wiring Harness Front End GY6 150 157QMJ Scooter Moped ATV 200-1023-4005
$26.99 $26.99 Add to Cart

Thuis is the short front end harness for the flasher, cluster, horn, gauge lights with a 9 pin handlebar switch plug. This fits the sporty style scooters like the Baja SC150, Falcon II, Falcon III, Falcon IV, JMstar Eagle, Jonway 150T-12, Jonway Epsilon 150, Lance GS-R 150, Longbo LB150T-12 Adventure, Roketa Fiji, Tank Racer, TNG DR150, Vento Phantom and many more... GY6 125 150cc engine, 152QMI 152QMJ 157QM 157QMJ